CN102629457B - Driving module of liquid crystal display - Google Patents
Driving module of liquid crystal display Download PDFInfo
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- CN102629457B CN102629457B CN201110288358.5A CN201110288358A CN102629457B CN 102629457 B CN102629457 B CN 102629457B CN 201110288358 A CN201110288358 A CN 201110288358A CN 102629457 B CN102629457 B CN 102629457B
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- integrated circuit
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- crystal display
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- 239000004973 liquid crystal related substance Substances 0.000 title claims abstract description 40
- 230000002159 abnormal effect Effects 0.000 claims description 5
- 238000001514 detection method Methods 0.000 claims description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 7
- 238000005516 engineering process Methods 0.000 description 4
- 230000006870 function Effects 0.000 description 2
- 238000004891 communication Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000011664 signaling Effects 0.000 description 1
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- Liquid Crystal Display Device Control (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
Abstract
The invention, which relates to the liquid crystal display field, discloses a driving module of a liquid crystal display, so that circuit simplification, reduction of difficulty in wiring, reduction of manufacturing cost of the driving module and the liquid crystal display can be realized. According to the embodiment of the invention, the driving module comprises: a power control unit; a gate driver IC, which is used for controlling row-by-row opening of pixel circuits; at least one time sequence source electrode driver IC, which integrates a time controller into a circuit obtained by the source electrode driver IC and is used for providing data voltages for the pixel circuits. Besides, the power control unit is respectively connected with the gate driver IC and the time sequence source electrode driver IC and is used for controlling a power system to provide power for the gate driver IC according to a clock signal from the time sequence source electrode driver IC.
Description
Technical field
The present invention relates to field of liquid crystal display, particularly relate to a kind of driver module of liquid crystal display.
Background technology
At present, the driver module of most of liquid crystal display comprises grid-driving integrated circuit, source electrode driven integrated circuit, time schedule controller and power control unit, because time schedule controller needs to be produced on printed circuit board (Printed Circuit Board, be called for short PCB) on, and each several part all needs to be connected to each other, not only the usable floor area of PCB is large, and components and parts on PCB, integrated circuit quantity are more, complex circuit, wiring difficulty is high.
Summary of the invention
Embodiments of the invention technical matters to be solved is the driver module providing a kind of liquid crystal display, can effectively reduce the usable floor area of PCB and the usage quantity of integrated circuit, reduces wiring difficulty, thus simplifies PCB, reduce cost of manufacture.
For solving the problems of the technologies described above, embodiments of the invention adopt following technical scheme:
A kind of driver module of liquid crystal display, comprise: power control unit and grid-driving integrated circuit, described grid-driving integrated circuit is for controlling opening line by line of image element circuit, also comprise: at least one sequential source electrode driven integrated circuit, described sequential source electrode driven integrated circuit time schedule controller is integrated into the circuit that source electrode driven integrated circuit obtains, described sequential source electrode driven integrated circuit is used for providing data voltage to described image element circuit, described power control unit is connected with sequential source electrode driven integrated circuit with described grid-driving integrated circuit respectively, power to described grid-driving integrated circuit for controlling power-supply system according to the clock signal from described sequential source electrode driven integrated circuit.
Described power control unit also comprises level shifting circuit, for the described clock signal from described sequential source electrode driven integrated circuit is converted to level controling signal, described grid-driving integrated circuit controls opening line by line of described image element circuit according to described level controling signal.
The driver module of described liquid crystal display, also comprises connector, and the signal from computer system arrives described sequential source electrode driven integrated circuit after described connector.
Described signal is low-voltage differential signal, and described low-voltage differential signal comprises clock signal described in three pairs of data-signals and a pair.
Described power control unit is also for powering to described sequential source electrode driven integrated circuit.
The driver module of described liquid crystal display, also comprises picture quality regulon, and described picture quality regulon is connected with described sequential source electrode driven integrated circuit with described power control unit respectively.
Whether described sequential source electrode driven integrated circuit also comprises error detection units, abnormal for the signal detecting input.
The driver module of described liquid crystal display, also comprises EEPROM (Electrically Erasable Programmable Read Only Memo) chip, and described EEPROM (Electrically Erasable Programmable Read Only Memo) chip is connected with described sequential source electrode driven integrated circuit, for the signal inputted described in buffer memory.
Described sequential source electrode driven integrated circuit is fixed on and covers on brilliant film.
The driver module of the liquid crystal display of the embodiment of the present invention, sequential source electrode driven integrated circuit is obtained by time schedule controller being integrated into source electrode driven integrated circuit, namely the area of the PCB shared by time schedule controller and corresponding line is eliminated, when ensureing that driver module normally works, enormously simplify circuit, the difficulty of the wiring reduced, reduces the cost of manufacture of the driver module of liquid crystal display.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, below the accompanying drawing used required in describing embodiment is briefly described, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the schematic diagram of the driver module of liquid crystal display in the embodiment of the present invention.
Description of reference numerals:
1, grid-driving integrated circuit 2, power control unit 3, sequential source electrode driven integrated circuit 4, picture quality regulon 5, connector
Embodiment
The embodiment of the present invention provides a kind of driver module of liquid crystal display, effectively reduces the usable floor area of PCB and the usage quantity of integrated circuit, simplifies PCB, reduce cost of manufacture.
Below in conjunction with accompanying drawing, the embodiment of the present invention is described in detail.
The driver module of the liquid crystal display of the present embodiment, as shown in Figure 1, comprise: power control unit 2 and grid-driving integrated circuit (Gate Driver IC) 1, grid-driving integrated circuit 1 is for controlling opening line by line of image element circuit, the driver module of the liquid crystal display of the present embodiment also comprises at least one sequential source electrode driven integrated circuit 3, wherein, sequential source electrode driven integrated circuit 3 number can according in actual production to the requirement choose reasonable of resolution.
Sequential source electrode driven integrated circuit 3 in the present embodiment time schedule controller (TimeController) is integrated into the circuit that source electrode driven integrated circuit (Source Driver IC) obtains, therefore, sequential source electrode driven integrated circuit 3 has the function of time schedule controller and source electrode driven integrated circuit simultaneously: make the signal from computer system automatically perform corresponding order by predetermined time table on the one hand, data voltage can be provided to image element circuit on the other hand, show corresponding picture to make liquid crystal display.
Power control unit 2 is connected with sequential source electrode driven integrated circuit 3 with grid-driving integrated circuit 1 respectively, powers to grid-driving integrated circuit 1 for controlling power-supply system according to the clock signal from sequential source electrode driven integrated circuit 3.Signal from computer system is generally low-voltage differential signal (Low Voltage Differential Signaling is called for short LVDS), and LVDS signal comprises three pairs of data-signals and a pair clock signal.After sequential source electrode driven integrated circuit 3 receives the clock signal in LVDS signal, clock signal is sent to power control unit 2, power control unit 2 also comprises level shifting circuit further, for the clock signal from sequential source electrode driven integrated circuit 3 is converted to level controling signal, grid-driving integrated circuit 1 controls opening line by line of image element circuit according to level controling signal.
The driver module of the liquid crystal display of the present embodiment obtains sequential source electrode driven integrated circuit 3 by time schedule controller being integrated into source electrode driven integrated circuit, namely the area of the PCB shared by time schedule controller and corresponding line is eliminated, when ensureing that driver module normally works, enormously simplify circuit, the difficulty of the wiring reduced, reduces the cost of manufacture of the driver module of liquid crystal display.
Further, the driver module of the liquid crystal display of the present embodiment also comprises connector (Connector) 5, and the signal from computer system arrives sequential source electrode driven integrated circuit 3 after connector 5.The effect of connector 5 is blocked in circuit between place or isolated obstructed circuit, erects the bridge of communication, thus make current flowing, make the function that circuit realiration is predetermined.The driver module of the liquid crystal display of the present embodiment is connected with outside computer system by connector 5.In addition, power control unit 2 also can be connected with outside power-supply system by connector 5 as required.
The power control unit 2 of the present embodiment is also for powering to sequential source electrode driven integrated circuit 3.
Further, the driver module of the liquid crystal display of the present embodiment also comprises picture quality regulon 4, and picture quality regulon 4 is connected with sequential source electrode driven integrated circuit with power control unit respectively.Picture quality regulon 4 comprises common electrode driving circuit, and common electrode driving circuit is used for providing voltage for public electrode.
Whether further, sequential source electrode driven integrated circuit 3 also comprises error detection units, abnormal for the signal detecting input.Three sequential source electrode driven integrated circuits 3 are comprised for driver module, one of them sequential source electrode driven integrated circuit is set as main circuit by us, and be designated as Master, other two are designated as Slave_1 respectively, Slave_2, when Slave_1 detects the abnormal signal of input, send the first error-detecting and output signal to Slave_2, by detecting further, Slave_2 judges whether the signal inputted exception occurs, if it is abnormal that Slave_2 also judges that the signal inputted occurs, then send the second error-detecting output signal to Master, after Master receives the second error-detecting output signal, send final error-detecting more respectively and output signal to Slave_1, Slave_2.Like this, the principle of work of error detection units and the identical of conventional driver module, ensure that the compatibility of sequential source electrode driven integrated circuit 3 and driver module.
Further, the driver module of the liquid crystal display of the present embodiment also comprises EEPROM (Electrically Erasable Programmable Read Only Memo) chip, and EEPROM (Electrically Erasable Programmable Read Only Memo) chip is connected with sequential source electrode driven integrated circuit 3, for the signal of buffer memory input.
Further, the sequential source electrode driven integrated circuit 3 of the present embodiment is fixed on and covers on brilliant film (Chip On Film is called for short COF).COF technology refers to the technology be fixed on by integrated circuit in flexible circuit board, and it uses soft additional circuit boards to make packaged chip carrier usually, is engaged by chip with flexible base plate circuit.Because time schedule controller has been integrated on sequential source electrode driven integrated circuit 3, and sequential source electrode driven integrated circuit 3 is fixed on COF and not easily produces Electro-static Driven Comb phenomenon, and the integrated circuit be printed on PCB very easily produces Electro-static Driven Comb phenomenon, therefore, the driver module of the liquid crystal display of the present embodiment effectively can avoid the damage of integrated circuit, adds the life-span of driver module.
Below the principle of work of the driver module of the liquid crystal display of the present embodiment is further introduced.
Signal from computer system arrives sequential source electrode driven integrated circuit 3 after connector 5, and above-mentioned signal is generally low-voltage differential signal, and LVDS signal comprises three pairs of data-signals and a pair clock signal.After sequential source electrode driven integrated circuit 3 receives the clock signal in LVDS signal, clock signal is sent to power control unit 2, power control unit 2 also comprises level shifting circuit further, for the clock signal from sequential source electrode driven integrated circuit 3 is converted to level controling signal, grid-driving integrated circuit 1 controls opening line by line of image element circuit according to level controling signal.The data-signal of LVDS signal is treated to mini-LVDS signal by sequential source electrode driven integrated circuit 3, mini-LVDS signal controls power control unit 2 further for image element circuit provides data voltage, in addition, the public electrode that the common electrode driving circuit of picture quality regulon 4 is image element circuit provides voltage, as can be seen here, through the cooperating of grid-driving integrated circuit 1, sequential source electrode driven integrated circuit 3, picture quality regulon 4 and power control unit 2, achieve the display of the dynamic menu of liquid crystal display.
The driver module of the liquid crystal display of the present embodiment obtains sequential source electrode driven integrated circuit by time schedule controller being integrated into source electrode driven integrated circuit, namely the line between the area of the PCB shared by time schedule controller and corresponding and former source electrode driven integrated circuit is eliminated, when ensureing that driver module normally works, enormously simplify circuit, the difficulty of the wiring reduced, reduces the cost of manufacture of the driver module of liquid crystal display.In addition, the principle of work of the error detection units of sequential source electrode driven integrated circuit is set to identical with the driver module of routine by the present embodiment, ensure that the compatibility of sequential source electrode driven integrated circuit and driver module, improve the practicality of the driver module of the liquid crystal display of the present embodiment.
Through the above description of the embodiments, those skilled in the art can be well understood to the mode that the present invention can add required common hardware by software and realize, and can certainly pass through hardware, but in a lot of situation, the former is better embodiment.Based on such understanding, technical scheme of the present invention can embody with the form of software product the part that prior art contributes in essence in other words, this computer software product is stored in the storage medium that can read, as the floppy disk of computing machine, hard disk or CD etc., comprise some instructions and perform method described in each embodiment of the present invention in order to make a computer equipment (can be personal computer, server, or the network equipment etc.).
The above; be only the specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, is anyly familiar with those skilled in the art in the technical scope that the present invention discloses; change can be expected easily or replace, all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain of described claim.
Claims (8)
1. the driver module of a liquid crystal display, comprise: power control unit and grid-driving integrated circuit, described grid-driving integrated circuit is for controlling opening line by line of image element circuit, it is characterized in that, also comprise: at least one sequential source electrode driven integrated circuit, described sequential source electrode driven integrated circuit time schedule controller is integrated into the circuit that source electrode driven integrated circuit obtains, described sequential source electrode driven integrated circuit is used for providing data voltage to described image element circuit, described power control unit is connected with sequential source electrode driven integrated circuit with described grid-driving integrated circuit respectively, power to described grid-driving integrated circuit for controlling power-supply system according to the clock signal from described sequential source electrode driven integrated circuit, after described sequential source electrode driven integrated circuit receives the clock signal from computer system, clock signal is sent to described power control unit, described power control unit also comprises level shifting circuit further, for the clock signal from described sequential source electrode driven integrated circuit is converted to level controling signal, grid-driving integrated circuit controls opening line by line of image element circuit according to level controling signal.
2. the driver module of liquid crystal display according to claim 1, is characterized in that, also comprises connector, and the signal from computer system arrives described sequential source electrode driven integrated circuit after described connector.
3. the driver module of liquid crystal display according to claim 2, is characterized in that, described signal is low-voltage differential signal, and described low-voltage differential signal comprises clock signal described in three pairs of data-signals and a pair.
4. the driver module of liquid crystal display according to claim 1, is characterized in that, described power control unit is also for powering to described sequential source electrode driven integrated circuit.
5. the driver module of liquid crystal display according to claim 1, is characterized in that, also comprises picture quality regulon, and described picture quality regulon is connected with described sequential source electrode driven integrated circuit with described power control unit respectively.
6. whether the driver module of liquid crystal display according to claim 1, is characterized in that, described sequential source electrode driven integrated circuit also comprises error detection units, abnormal for the signal detecting input.
7. the driver module of liquid crystal display according to claim 6, it is characterized in that, also comprise EEPROM (Electrically Erasable Programmable Read Only Memo) chip, described EEPROM (Electrically Erasable Programmable Read Only Memo) chip is connected with described sequential source electrode driven integrated circuit, for the signal inputted described in buffer memory.
8. the driver module of liquid crystal display according to claim 1, is characterized in that, described sequential source electrode driven integrated circuit is fixed on and covers on brilliant film.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110288358.5A CN102629457B (en) | 2011-09-26 | 2011-09-26 | Driving module of liquid crystal display |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110288358.5A CN102629457B (en) | 2011-09-26 | 2011-09-26 | Driving module of liquid crystal display |
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| Publication Number | Publication Date |
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| CN102629457A CN102629457A (en) | 2012-08-08 |
| CN102629457B true CN102629457B (en) | 2014-12-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201110288358.5A Expired - Fee Related CN102629457B (en) | 2011-09-26 | 2011-09-26 | Driving module of liquid crystal display |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103700319A (en) * | 2013-12-26 | 2014-04-02 | 京东方科技集团股份有限公司 | Spliced display device |
| CN103745665B (en) * | 2014-01-13 | 2016-05-25 | 北京京东方显示技术有限公司 | A kind of transparent display |
| CN105590603B (en) * | 2016-02-25 | 2018-07-03 | 硅谷数模半导体（北京）有限公司 | Source electrode driver and display system |
| CN105590613A (en) * | 2016-03-25 | 2016-05-18 | 京东方科技集团股份有限公司 | Display panel and display device |
| CN105679268B (en) * | 2016-03-29 | 2019-01-08 | 硅谷数模半导体（北京）有限公司 | Display component |
| CN106652858B (en) * | 2016-09-29 | 2020-03-10 | 福州大学 | Automatic detection system and method for compatibility abnormity of display |
| CN106504687B (en) * | 2016-12-16 | 2018-04-03 | 惠科股份有限公司 | Display panel detection method and display panel detection system |
| CN107170415B (en) * | 2017-05-10 | 2019-09-10 | 深圳市华星光电技术有限公司 | Horizontal substrate and control panel merge the LCD panel of framework and its mura repairs control method |
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| CN1920928A (en) * | 2005-08-22 | 2007-02-28 | 奇美电子股份有限公司 | Driving system for LCD |
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| CN101577103A (en) * | 2008-05-09 | 2009-11-11 | 乐金显示有限公司 | Device and method for driving liquid crystal display device |
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| KR100914749B1 (en) * | 2002-12-31 | 2009-08-31 | 엘지디스플레이 주식회사 | Reflective liquid crystal display device including driving circuit |
| CN100580761C (en) * | 2007-12-20 | 2010-01-13 | 友达光电股份有限公司 | LCD and residual shadow attenuation method |
| CN101976551B (en) * | 2010-10-19 | 2014-06-04 | 友达光电股份有限公司 | Display driving circuit, liquid crystal display and display driving method |
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- 2011-09-26 CN CN201110288358.5A patent/CN102629457B/en not_active Expired - Fee Related
Patent Citations (4)
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|---|---|---|---|---|
| CN101359461A (en) * | 2003-12-26 | 2009-02-04 | 卡西欧计算机株式会社 | Display drive device and display apparatus having same |
| CN1645463A (en) * | 2004-06-14 | 2005-07-27 | 友达光电股份有限公司 | Liquid crystal display device |
| CN1920928A (en) * | 2005-08-22 | 2007-02-28 | 奇美电子股份有限公司 | Driving system for LCD |
| CN101577103A (en) * | 2008-05-09 | 2009-11-11 | 乐金显示有限公司 | Device and method for driving liquid crystal display device |
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| CN102629457A (en) | 2012-08-08 |
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